Cisco ASA Audit Event: 201010

201010: Embyonic connection limit exceeded

Cisco ASA is a security device that provides the combined capabilities of a firewall, an antivirus, and an intrusion prevention system. It also facilitates virtual private network (VPN) connections.It helps to detect threats and stop attacks before they spread through the network.

Message: %ASA-6-201010: Embryonic connection limit exceededeconns/ limitfor dir packet from source_address/ source_port to dest_address/dest_port on interface interface_name.

Event 201010 is generated when an attempt to establish a TCP connection fails because of an exceeded embryonic connection limit, which would have been configured with the 'set connection embryonic-conn-max MPC'command for a traffic class. The message contains:

  • The current count of embryonic connections associated to the configured traffic class.
  • The configured embryonic connection limit for the traffic class.
  • The first packet that initiates the connection on the interface.
  • The source IP address and port number.
  • The destination IP address and port number.
  • The name of the interface on which the policy limit is enforced.

How could you resolve this situation?

This event does not require any action.

Cisco ASA Auditing Tool

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